Here are a few videos on how to get OBS setup and working the best for you. If you have any questions leave a comment or use the contact page.

Here is the link to download OBS – Open Broadcaster Software

How to Download and Install OBS – Open Broadcast Software

Record OBS in .mp4 instead of .flv

Initial Screen Capture Setup with OBS – Open Broadcast Software

Camtasia is a paid full feature recording and editing solution